Improved blacksmith s portable forge



UNITED STATES PATENT OFFICE MATHEW DE LA IWIONTANYA, OF SAN FRANCISCO,CALIFORNIA.

IMPROVED BLACKSMITHS PORTABLE FORGE.

Specification forming part of Letters Patent No. 33,479, dated October15, 1861.

T0 all whom, it may concern,.-

Be it known that I, MATHEW DE LA MON- TANYA, of the city and county ofSan Francisco, and State of California, have invented a new and usefulPortable Forge; and I do hereby declare that the following is a full,clear, and exact description of the construction and operation of thesame, reference being had to the annexed drawings, making` a part ofthis specification, in which- Figure l is a side view of the forge; Fig.2, a front view of the same with the doors of the hood closed; Fig. 3, avertical section, and Fig'. 4 a top view with the hood and the top ofthe forge removed.

To enable others skilled in t-he art to make and use my invention, Iwill proceed to describe its construction and operation.

I construct the cylindrical body A of my forge of sheet-iron rivetedair-tight. Bottom and top plates Band C are also riveted or otherwisetted air-tight in the said body. On the bottom plate rests theblowing-cylinder D, in which the piston E can be madedo work up and downby the lever F, the connection g, and the handle G, the piston-rod beingmade air-tight at bottom by the stuffingbox H and at the top by the`guide-box: I, which is not open outward. The cylinder has asuction-passage J for the downward stroke ot` the piston and asuction-valve K for the same, and a suction-valve L for the upwardstroke. Discharge-valves M and N are provided for each end of thecylinder, which deliver the ai!l in the hermetically-closed chamber O,formed by the body of the forge. The

top has a tuyere P, with ash-box Q attached. The ash-box is pierced withfour holes in its sides some distance above the bottom, and the tuyerehas also one or more small nozzles to deliver the blast into the fire.The hood may be of any usual construction.

The operation is as follows: An alternate motion being given to thehandle G, a reciproeating motion is communicated to the piston E, and bymeans of the suction-valves Kand L and of the dischargevalves M and N aconstant supply of air is fotced into the chamber formed by the body ofthe forge, which is thus made to answer the purpose of an airchamber tosecure an even and steady blast, which nds its way through the aperturesin the ash-box, a'nd thence through those of the tuyere into the tire.Any ashes that may fall through t-he nozzles of the tuyere are caught inthe ash-box, where they lie undisturbed by the blast which is for thispurpose int-roduced into the ash-box at some distance above the bottom.

What I claim as my invention, and desire to secure by Letters Patent.is-

1. The application of the double acting blowing-cylinder to portableforges.

2. The closed chamber O, occupying the main bodyotl the forge andemployed to equalize the blast between the cylinder D and tuyere P, asexplained.

San Francisco, April 14, 1860.

MATHEW DE LA MONTANYA. Vitnesses:

I. P. CLARK, J. B. DAYTON.

